A Personal practice model (PPM) is a social work tool for understanding and linking theories to each other and to the practical tasks of social work. Mullen describes the PPM as “the art and science of social work”, or more prosaically, “an explicit conceptual scheme that expresses a worker's view of practice”. A worker should develop a PPM pragmatically over their entire career by reflecting on, and the absorption of, a variety of sources. They are an important basis for the delivery of good practice and the evaluation of such. Bowles, Collingridge, Curry and Valentine stress the importance of deriving the guidelines for good practice from a text such as the Australian Association of Social Workers Code of Ethics.